XC908AS60ACFU Motorola Semiconductor Products, XC908AS60ACFU Datasheet - Page 75

• Manufacturer Part Number: XC908AS60ACFU
• Description: MC68HC908AZ60A, MC68HC908AS60A Hcmos Microcontroller Unit Technical Data
• Manufacturer: Motorola Semiconductor Products

MC68HC908AZ60A — Rev 2.0
MOTOROLA
Algorithm for programming
a row (64 bytes) of FLASH memory
NOTE:
The time between each FLASH address change (step 7 to step 7), or
the time between the last FLASH address programmed
to clearing PGM bit (step 7 to step 10)
must not exceed the maximum programming
time, t
This row program algorithm assumes the row/s
to be programmed are initially erased.
PROG
Figure 4-4. FLASH Programming Algorithm Flowchart
max.
1
2
3
4
5
6
7
8
FLASH-1 Memory
Read the FLASH block protect register
Write any data to any FLASH address
within the row address range desired
Write data to the FLASH address
to be programmed
Wait for a time, t
Wait for a time, t
Wait for a time, t
Set HVEN bit
programming
Set PGM bit
Completed
this row?
N
PROG
nvs
pgs
10
11
12
13
Y
End of programming
Wait for a time, t
Wait for a time, t
Clear HVEN bit
Clear PGM bit
FLASH-1 Program Operation
nvh
rcv
FLASH-1 Memory
Technical Data
75